Be on the lookout for BOLTING on plants if your temperatures are fluctuating. Here in SC, zone 7B-8A, our temps have been all over the place, hitting 70F+ degrees at times. We are already seeing signs of bolting.
WHAT IS BOLTING?
Bolting is what we call it when the plant changes its focus to produce a flower that makes seeds, for the purpose of reproduction and having the plant variety survive.
If you catch it fast enough, you can sometimes get a tasty treat (like these collard florets). But be aware that the further along that plant gets in the process, the flavor profile can change from a sweeter taste to a bitter, more inedible one. At this point you can let the plant go to seed to collect those (once dry) or remove it.